King Charles led commemorations on the 20th anniversary of the 2005 London transit bombings - the deadliest attack on the capital since World War II.
52 were killed and over 700 were injured when four men inspired by al-Qaida blew themselves up on three subway trains and a bus during rush hour on July 7th, 2005.
UK correspondent Gavin Grey says King Charles spoke of the importance of unity.
LISTEN ABOVE
Take your Radio, Podcasts and Music with you